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JPH11504088A - Steam barrier for building insulation - Google Patents

Steam barrier for building insulation

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Publication number
JPH11504088A
JPH11504088A JP8531403A JP53140396A JPH11504088A JP H11504088 A JPH11504088 A JP H11504088A JP 8531403 A JP8531403 A JP 8531403A JP 53140396 A JP53140396 A JP 53140396A JP H11504088 A JPH11504088 A JP H11504088A
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Prior art keywords
barrier according
vapor barrier
water vapor
vapor
diffusion resistance
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JP8531403A
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JP4471403B2 (en
Inventor
ハルトヴィッヒ クンツェル
テオ グロスキンスキー
Original Assignee
フラウンホッファー−ゲゼルシャフト ツァー フェーデルング デア アンゲバンテン フォルシュング エー ファー
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/625—Sheets or foils allowing passage of water vapor but impervious to liquid water; house wraps
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D12/00—Non-structural supports for roofing materials, e.g. battens, boards
    • E04D12/002—Sheets of flexible material, e.g. roofing tile underlay
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/36—Positioning; Changing position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1313—Edges trailing edge

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)
  • Laminated Bodies (AREA)
  • Thermal Insulation (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Lubricants (AREA)
  • Braking Arrangements (AREA)
  • Sealing Material Composition (AREA)

Abstract

(57)【要約】 本発明は、特に新築建造物や建造物の改築の断熱手段として、建造物の断熱に用いられる蒸気障壁に関する。本発明による蒸気障壁は、多様な周囲環境条件下で、水蒸気拡散に対して、効果を発揮する場所に設置される。この効果を実現するために、主要物質として、周囲湿度に依存する水蒸気拡散抵抗特性値を備え、且つ、十分な引張り強さと引裂き抵抗を備える物質が用いられる。 (57) [Summary] The present invention relates to a vapor barrier used for heat insulation of a building, particularly as a heat insulating means for a new building or a renovation of a building. The vapor barrier according to the present invention is installed in a location that is effective against water vapor diffusion under various ambient environmental conditions. In order to realize this effect, a substance having a water vapor diffusion resistance characteristic value depending on the ambient humidity and having sufficient tensile strength and tear resistance is used as a main substance.

Description

【発明の詳細な説明】建造物断熱用蒸気障壁 本発明は、特に新築建造物や建造物の改築の断熱手段として、建造物の断熱の ために室内側に設置される蒸気障壁に関する。 建造物の加熱機器から発生する二酸化酸素の排出を抑制するために、新築建造 物の構造や建造物の改築において、断熱対策が取られている。建造物の所有者に より常に考慮される経済的理由のために、ここでは、コストの間題も考慮に入れ る。更に、ここでは、建造物の外観は、現実に行い得ることに対して、ある制限 を表すことにもなる重要な要因である。従って、例えば、この形態の断熱対策は 、内側に塗布される断熱層を通して視認可能な骨組みを備える建造物に対して実 行されるだけである。また、骨組み木材中の許容可能な水分含有量は、特に冬期 の条件下で、可能な蒸気拡散と室内側に設置される蒸気障壁によって、確保され なければならない。これに対比して、夏期において、木材製の支柱と煉瓦積みの 繋ぎ部分を通過する雨の水滴は、骨組み用木材の長期寿命を保証するために、内 側の方向に乾燥される必要がある。 また、蒸気を通さない前覆い（厚板張りの屋根構造等）を備えるハイピッチ屋 根（"high-pitched roofs"）の準完全なたる木断熱において、上記と同様な問題 が生じる。それ故、特に北向きの屋根に関して、拡散当量空気間隔幅が１０m未 満である水蒸気拡散抵抗特性値（Ｓd−値）を備える蒸気障壁が内側に取り付け られる場合、夏期において、厚板張りが乾燥する度合いは、害を及ぼさない木材 湿り状況を実現するために十分ではないことを、"the Fraunhofer Institut fur Bauphysik"によって行われた試験は示している。従って、室内側に取り付けら れる蒸気障壁が、例えば、対流によって発生する水分蓄積を十分に放出させるこ とはもはや不可能である。 上記のような問題点に鑑み、本発明の目的は、可能な限り、湿気によって発生 する使用建造物材料の損傷を可能な限り防止するように、多様な条件下で、使用 変更可能な、間隔空気と建造物構成品の内部の間の水蒸気拡散を保証する場所に 配置される室内側に設置される蒸気障壁を考案することである。本発明の目的は 、クレーム１の特徴的部分で列挙された特徴により達成される。 従属クレームに記載の特徴の適用により、更なる発明の展開と実施例を提供す る。 本発明によれば、室内側に設置される蒸気障壁は、「湿度対応型蒸気障壁」と 呼ばれることもでき、基本的な物質として、周囲湿度に依存する水蒸気拡散抵抗 特性を備え、且つ、建造中の建造物に用いるための十分な引っ張り強さと圧縮力 を備える物質が用いられる。 フィルムの形態でまたは担体物質上の被覆として、蒸気障壁用物質は、蒸気障 壁の周囲空気の相対湿度が３０％〜５０％の場合に、拡散当量空気間隔幅が２〜 ５mである水蒸気拡散抵抗特性値（Ｓd−値）を備え、該相対湿度が典型的な夏期 の湿度である６０％〜８０％の場合に、例えば、拡散当量空気間隔幅が１m未満 である水蒸気拡散抵抗特性値（Ｓd−値）を備える。 これにより、冬期条件の下で、夏期条件よりも大きな水蒸気拡散抵抗特性値が 得られる。このように、夏期の乾燥プロセスは、冬期条件下での含有水分供給が 使用物質と建造物自体に損傷を与える危険を伴う値になる可能性がないことが望 まれる。 従来技術の間題点で既述された適用事例に加えて、本発明の蒸気障壁は、金属 製の屋根や木製支柱構造にも用いられ、更に、断熱性能の向上だけでなく、建造 物の費用の減少にもつながる。 所望の特性を有する蒸気障壁用物質として、特に、BIEDERBICK, K., "Kunststoffe-kurz und bundig"，Vogel-Verlag Wurzburgから知られているよう に、例えば、ポリアミド６、ポリアミド４、またはポリアミド３を用いることが 可能である。これらのポリアミドは、フィルムとして挿入され、固有の性質とし て水蒸気拡散抵抗特性に関する所望の特徴を備える。更に、ポリアミドは、建造 物に要求される強度を備えるので、強度に関係する費用を追加することなく用い られる。フィルムの厚さは、１０μm〜２mmであり、望ましくは、２０μm〜１０ ０μmである。 しかし、十分な強度を備えていない他の物質が用いられてもよく、適切な担体 物質に付加されてよい。この担体物質は、小さな水蒸気拡散抵抗特性値を有する ことが望ましく、本発明による蒸気障壁に要求される特徴は、基本的に被覆によ って提供される。 例えば、紙編物、合成繊維紡績構造物から形成されるフィルム、または孔を有 するポリエチレンフィルム等のフィルム繊維強化セルロース物質は、担体用物質 や担体として用いられる。 上記物質は、担体物質上の被覆として用いられてもよい。ここで、この被覆は 、担体物質の一方の表面に塗布されるが、特別の場合において、二つの層の担体 間に挟まれることも可能である。後者の場合、被覆物質は、両側から効果的に保 護されるので、その機械的摩滅が防止される。従って、被覆物質の長期に渡る所 望の水蒸気拡散が保証される。各層を積み重ねることにより、複数の層を有する 構造物が構成されることも可能である。 担体物質の被覆のために、様々な物質と材料が用いられる。それ故、例えば、 改良ポリビニルアルコール等のポリマーが、適切な被覆プロセスで付加される。 ここで、ＤＩＮ５２６１５により測定されているように、乾燥状態と湿り状態の 間で１０倍（the power of ten）を越えて、水蒸気拡散抵抗特性値は変化する。 しかし、担体用被覆物質として、分散合成樹脂、メチルセルロース、亜麻仁油 アルキド樹脂、骨にかわ剤（"bone glue"）、またはタンパク質誘導剤も用いら れる。 担体物質が一方の表面で被覆される場合、機械的な影響に対する保護が全く、 若しくは、ほんの僅かしか必要とされない側の表面上に、この被覆は塗布される 。この場合、保護担体物質が空間に直面する側に向き、または空間から遠ざかる 側に向くように、本発明による蒸気障壁の支持が行われる。 以下に、一つの例を用いることにより、本発明が更に詳細に説明される。 ここでは、本発明による蒸気障壁は、ポリアミド６から構成されるフィルムか らのみ形成される。実験は、厚さが５０μmのフィルムで行われる。使用される ポリアミド６は、現在、独国のケンプテンに所在する2MF-Folien GmbH"という社 名の会社によって製造されている。実験室の試験における吸湿作用 ＤＩＮ５２６１５によれば、乾燥範囲（３％〜５０％の相対湿度）と湿り範囲 （５０％〜９３％の相対湿度）において、および、これらの間に位置する二つの 湿り範囲（３３％〜５０％と５０％〜７５％の相対湿度）において、湿度対応型 蒸気障壁の水蒸気拡散抵抗特性が決定される。厚さが５０μmの蒸気障壁の拡散 当量空気間隔幅（Ｓd−値）に対する試験結果が、試験で一般に採用されている 平均相対湿度に依存して、図１に示されている。乾燥範囲のＳd−値と湿り範囲 のＳd−値との差は１０倍（the power of ten）を越えるので、冬期において３ ０％〜５０％の間でおよび夏期において約６０％〜７０％の間で変化する実際の 間隔空気状態の下で、拡散流れが蒸気障壁により明らかに制御されることが見込 まれる。実際の適用例 蒸気を通さない副屋根を備えるハイピッチ屋根は、厚さが１０cm〜２０cmの鉱 物繊維から形成される完全なたる木間断熱の設置後、室内側に向けられた蒸気障 壁に拘わらず、２〜３年以内で湿るので、損傷は避けられないことを、数値解析 は示している。この状況は、１月における５０％の相対湿度と７月における７０ ％の相対湿度の間で変化する高い間隔空気湿度に関して、特に、重大であり、こ れらの時期には、同時に、北方向を通る短波放射線ゲイン（"gain"）が比較的小 さくなる。それ故、"Holzkirchen"の気候条件の下で、このような構成を備える 長期間の湿度均衡に対する湿度対応型蒸気障壁の影響は、既に実験で何回も実証 されている方法の援助を得て、低い水準に見積もられている。 屋根がその周囲で吸湿平衡状態にあり、北方に向けられ、且つ、厚板張り、歴 青化フェルト、および瓦覆いを備える非断熱ハイピッチ屋根（２８°のピッチ） から押し進め、伝統的な蒸気障壁、且つ室内側に向けられた湿度対応型蒸気障壁 を備えるたる木間断熱の設置後の湿度の変動が、図２で示されている。図２の上 のグラフにおいて、１０年に渡る屋根の全水分含有量の変化が示され、図２の下 のグラフにおいて、１０年に渡る厚板張りの木材水分含有率の変化が示されてい る。伝統的な蒸気障壁を備える屋根の含有水分が、季節の経過と共に、最初の年 に既に起こって長期的変化の原因となっている木材水分含有率（２０Ｍ．−％を 越えている）と共に、急激に上昇するが、その一方で、湿度対応型蒸気障壁を備 える屋根において、含有水分の蓄積は検知されていない。夏期において、木材水 分含有率は常に低下し、２０Ｍ−％未満になるので、湿気による損傷の恐れは無 い。 従って、湿度対応型蒸気障壁は、大きな損傷の危険を伴うことなく、古い建造 物のハイピッチ屋根が断熱される可能性を高めることができる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steam barrier installed indoors for heat insulation of a building, particularly as a heat insulating means for a new building or a renovation of a building. In order to suppress the emission of oxygen dioxide generated from heating equipment of buildings, insulation measures have been taken in the construction of new buildings and in the reconstruction of buildings. For economic reasons, which are always taken into account by the owner of the building, cost issues are also taken into account here. Furthermore, here, the appearance of the building is an important factor which also represents a limitation on what can be done in practice. Thus, for example, this form of insulation is only implemented for buildings with a framework that is visible through the insulation layer applied on the inside. Also, an acceptable moisture content in framed wood must be ensured, especially under winter conditions, by possible steam diffusion and steam barriers installed indoors. In contrast, in the summer, raindrops that pass through the connection between the timber post and the brickwork need to be dried inward in order to guarantee the long life of the framing wood. In addition, the same problem as described above occurs in semi-perfect tree insulation of high-pitch roofs ("high-pitched roofs") having a vapor-proof front covering (such as a thick-plated roof structure). Therefore, especially on north facing roofs, planks dry in summer if a steam barrier with a water vapor diffusion resistance characteristic value (S d -value) with a diffusion equivalent air spacing of less than 10 m is installed inside. Tests performed by "the Fraunhofer Institut fur Bauphysik" show that the degree is not enough to achieve a harmless wood wet condition. Thus, it is no longer possible for a vapor barrier mounted on the inside of the room to adequately release the water accumulation generated, for example, by convection. In view of the above problems, it is an object of the present invention to make it possible to change the distance under various conditions so as to prevent as much as possible the damage of the used building material caused by moisture. The idea is to devise a steam barrier installed on the inside of the room, which is placed in a place that guarantees the diffusion of water vapor between the air and the interior of the building component. The object of the invention is achieved by the features listed in the characterizing part of claim 1. Further developments and embodiments of the invention are provided by application of the features recited in the dependent claims. According to the present invention, the steam barrier installed on the indoor side can also be referred to as a “humidity-compatible steam barrier”, and as a basic substance, has a steam diffusion resistance characteristic depending on ambient humidity, and Materials with sufficient tensile and compressive strength for use in the building inside are used. The vapor barrier material, in the form of a film or as a coating on a carrier material, has a water vapor diffusion resistance with a diffusion equivalent air spacing of 2-5 m when the relative humidity of the air surrounding the vapor barrier is 30% -50%. characteristic values - with the (S d value), if said relative humidity is typical summer is the humidity of 60% to 80%, for example, diffusion equivalent water vapor diffusion resistance characteristic value is the air gap width is less than 1 m ( S d -value). As a result, a larger water vapor diffusion resistance characteristic value can be obtained under winter conditions than in summer conditions. Thus, it is desired that the drying process in the summer should not have a value at which the water supply under the winter conditions can be at a risk of damaging the materials used and the building itself. In addition to the applications already described in the context of the prior art, the steam barrier of the present invention is also used for metal roofs and wooden strut structures, which not only enhances insulation performance, but also improves building performance. It also leads to cost reduction. As vapor barrier materials having the desired properties, in particular, for example polyamide 6, polyamide 4, or polyamide 3, as known from BIEDERBICK, K., "Kunststoffe-kurz und bundig", Vogel-Verlag Wurzburg It can be used. These polyamides are inserted as films and possess the desired characteristics of water vapor diffusion resistance properties as inherent properties. In addition, polyamides have the strength required for buildings and can therefore be used without additional costs associated with strength. The thickness of the film is from 10 μm to 2 mm, preferably from 20 μm to 100 μm. However, other materials that do not have sufficient strength may be used and may be added to a suitable carrier material. The carrier material preferably has a low water vapor diffusion resistance characteristic, and the required characteristics of the vapor barrier according to the invention are provided essentially by the coating. For example, a film formed from a knitted paper, a synthetic fiber spun structure, or a film fiber-reinforced cellulose material such as a polyethylene film having pores is used as a carrier material or carrier. The material may be used as a coating on a carrier material. Here, the coating is applied to one surface of the carrier material, but in special cases it can also be sandwiched between two layers of carrier. In the latter case, the coating material is effectively protected from both sides, so that its mechanical abrasion is prevented. Thus, the desired long-term diffusion of water vapor of the coating material is guaranteed. By stacking each layer, a structure having a plurality of layers can be formed. Various materials and materials are used for coating the carrier material. Thus, for example, a polymer such as modified polyvinyl alcohol is added in a suitable coating process. Here, as measured by DIN 52615, the water vapor diffusion resistance characteristic value changes more than ten times (the power of ten) between the dry state and the wet state. However, dispersion coating resins, methylcellulose, linseed oil alkyd resins, bone glues, or protein inducers are also used as carrier coating materials. If the carrier material is coated on one surface, the coating is applied on the surface on the side where little or no protection against mechanical effects is required. In this case, the support of the vapor barrier according to the invention is provided in such a way that the protective carrier material is directed toward the side facing the space or away from the space. Hereinafter, the present invention will be described in more detail by using one example. Here, the vapor barrier according to the invention is formed only from a film composed of polyamide 6. The experiment is performed on a 50 μm thick film. The polyamide 6 used is currently manufactured by a company named 2MF-Folien GmbH, located in Kempten, Germany. According to DIN 52615, hygroscopic action in laboratory tests , the dry range (3% to 50%). % Relative humidity) and in the wet range (50% to 93% relative humidity) and in between two wet ranges (33% to 50% and 50% to 75% relative humidity). The water vapor diffusion resistance characteristic of the humidity-compatible vapor barrier is determined.The test results for the diffusion equivalent air space width (S d -value) of the vapor barrier having a thickness of 50 μm are compared with the average relative humidity generally used in the test. dependence to, S d of drying ranges are shown in Figure 1 - S d value and wet range -. since more than a difference of 10 times the value of (the power of ten), in winter 3 0% to 50 Between% and in summer Under actual spacing air condition varying between about 60% to 70%, expected that the diffusion flow is clearly controlled by the vapor barrier. High pitch roof with a sub-roof impervious to practical applications vapor After the installation of complete wood-to-wood insulation formed from mineral fibers with a thickness of 10 cm to 20 cm, regardless of the vapor barrier directed to the indoor side, it will be moist within two to three years, so that damage is avoided. Numerical analysis shows that this is not the case, especially for high-interval air humidity that varies between 50% relative humidity in January and 70% relative humidity in July. At the same time, the shortwave radiation gain ("gain") passing through the north direction at the same time becomes relatively small, therefore, under the climatic conditions of "Holzkirchen", the long-term humidity equilibrium with such a configuration Humidity-compatible steam barrier The effects are estimated to low levels with the help of methods that have already been demonstrated several times in experiments: the roof is in a moisture-absorbing equilibrium around it, oriented northward and planked, After installation of a non-insulated high pitch roof (28 ° pitch) with bituminized felt and tiled covering, installation of a traditional steam barrier and a barrel-to-tree insulation with a humidity-responsive steam barrier directed to the interior side. Humidity variations are shown in Figure 2. In the upper graph of Figure 2, the change in total moisture content of the roof over 10 years is shown, and in the lower graph of Figure 2, the thickness over 10 years. Changes in the wood moisture content of the planks are shown: the moisture content of the roof with traditional steam barriers, as the season progresses, the wood moisture already occurring in the first year and causing long-term changes Content (20M. -Over 0.1%), while no accumulation of moisture content has been detected on roofs with humidity-compatible vapor barriers. In the summer, the wood moisture content is constantly reduced to less than 20 M-%, so there is no danger of damaging by moisture. Thus, a humidity-responsive steam barrier can increase the likelihood of insulated high-pitch roofs of old buildings without the risk of significant damage.

───────────────────────────────────────────────────── フロントページの続き (81)指定国 ＥＰ(ＡＴ，ＢＥ，ＣＨ，ＤＥ， ＤＫ，ＥＳ，ＦＩ，ＦＲ，ＧＢ，ＧＲ，ＩＥ，ＩＴ，Ｌ Ｕ，ＭＣ，ＮＬ，ＰＴ，ＳＥ)，ＯＡ(ＢＦ，ＢＪ，ＣＦ ，ＣＧ，ＣＩ，ＣＭ，ＧＡ，ＧＮ，ＭＬ，ＭＲ，ＮＥ， ＳＮ，ＴＤ，ＴＧ)，ＡＰ(ＫＥ，ＬＳ，ＭＷ，ＳＤ，Ｓ Ｚ，ＵＧ)，ＵＡ(ＡＭ，ＡＺ，ＢＹ，ＫＧ，ＫＺ，ＭＤ ，ＲＵ，ＴＪ，ＴＭ)，ＡＬ，ＡＭ，ＡＵ，ＢＢ，ＢＧ ，ＢＲ，ＣＡ，ＣＮ，ＣＺ，ＥＥ，ＧＥ，ＨＵ，ＩＳ， ＪＰ，ＫＧ，ＫＰ，ＫＲ，ＬＫ，ＬＲ，ＬＴ，ＬＶ，Ｍ Ｄ，ＭＧ，ＭＫ，ＭＮ，ＭＸ，ＮＯ，ＮＺ，ＰＬ，ＲＯ ，ＳＧ，ＳＩ，ＳＫ，ＴＲ，ＴＴ，ＵＡ，ＵＳ，ＵＺ， ＶＮ (72)発明者 グロスキンスキー テオ ドイツ連邦共和国 ホルツキルヒェン Ｄ −83607 アプト−カスバー−シュトラー セ（番地なし)────────────────────────────────────────────────── ─── Continuation of front page    (81) Designated countries EP (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, L U, MC, NL, PT, SE), OA (BF, BJ, CF) , CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG), AP (KE, LS, MW, SD, S Z, UG), UA (AM, AZ, BY, KG, KZ, MD , RU, TJ, TM), AL, AM, AU, BB, BG , BR, CA, CN, CZ, EE, GE, HU, IS, JP, KG, KP, KR, LK, LR, LT, LV, M D, MG, MK, MN, MX, NO, NZ, PL, RO , SG, SI, SK, TR, TT, UA, US, UZ, VN (72) Inventor Groskinski Teo             Germany Holzkirchen D             −83607 Apt-Kasbah-Streller             S (no address)

Claims (1)

【特許請求の範囲】 １．建造物の断熱用として室内側に設置される蒸気障壁であって、 前記蒸気障壁の少なくとも一部は、周囲湿度に依存する水蒸気拡散抵抗特性値 を備える物質から形成されており、前記物質は、前記蒸気障壁の周囲空気の相対 湿度が３０％〜５０％の場合に拡散当量空気間隔幅が２〜５ｍである水蒸気拡散 抵抗特性値（Ｓd−値）を備え、該相対湿度が６０％〜８０％の場合に拡散当量 空気間隔幅が１m末満である水蒸気拡散抵抗特性値（Ｓd−値）を備えることを特 徴とする蒸気障壁。 ２．前記物質は、フィルムであることを特徴とする請求項１に記載の蒸気障壁。 ３．前記フィルムは、ポリアミド６、ポリアミド４、またはポリアミド３から選 択されることを特徴とする請求項２に記載の蒸気障壁。 ４．前記フィルムは、１０μm〜２mmの厚さであり、望ましくは、２０μm〜１０ ０μmの厚さであることを特徴とする請求項２または請求項３の一つの項に記載 の蒸気障壁。 ５．前記物質は、担体物質に塗布されるポリマー被覆であることを特徴とする請 求項１に記載の蒸気障壁。 ６．前記ポリマー被覆用ポリマーは、ポリビニルアルコール、分散合成樹脂、メ チルセルロース、亜麻仁油アルキド樹脂、骨にかわ剤、またはタンパク質誘導剤 から選択されることを特徴とする請求項５に記載の蒸気障壁。 ７．前記物質は、小さな水蒸気拡散抵抗特性値を有する担体物質に対する被覆と して塗布されることを特徴とする請求項１ないし請求項６のいづれか一つの項に 記載の蒸気障壁。 ８．前記物質は、小さな水蒸気拡散抵抗特性値を有する担体物質の二つの層の間 に挟持されることを特徴とする請求項１ないし請求項７のいづれか一つの項に記 載の蒸気障壁。 ９．前記担体物質は、繊維強化セルロース物質から選択されることを特徴とする 請求項１ないし請求項８のいづれか一つの項に記載の蒸気障壁。[Claims] 1. A steam barrier installed on the indoor side for heat insulation of a building, wherein at least a part of the steam barrier is formed from a material having a water vapor diffusion resistance characteristic value depending on ambient humidity, the water vapor diffusion resistance characteristic value diffusion equivalent air space width is 2~5m when the relative humidity of the ambient air of the steam barrier 30% to 50% - with a (S d value), said relative humidity is 60% A steam barrier having a water vapor diffusion resistance characteristic value (S d -value) in which a diffusion equivalent air gap width is less than 1 m when 80%. 2. The vapor barrier according to claim 1, wherein the substance is a film. 3. The vapor barrier according to claim 2, wherein the film is selected from polyamide 6, polyamide 4, or polyamide 3. 4. 4. The vapor barrier according to claim 2, wherein the film has a thickness of 10 [mu] m to 2 mm, preferably 20 [mu] m to 100 [mu] m. 5. The vapor barrier according to claim 1, wherein the material is a polymer coating applied to a carrier material. 6. The vapor barrier according to claim 5, wherein the polymer for polymer coating is selected from polyvinyl alcohol, dispersion synthetic resin, methyl cellulose, linseed oil alkyd resin, bone mold, or protein inducer. 7. 7. Vapor barrier according to any one of the preceding claims, wherein the substance is applied as a coating to a carrier substance having a low water vapor diffusion resistance characteristic value. 8. 8. A vapor barrier according to any one of the preceding claims, wherein the material is sandwiched between two layers of a carrier material having a low water vapor diffusion resistance value. 9. 9. A vapor barrier according to any one of the preceding claims, wherein the carrier material is selected from a fiber reinforced cellulosic material.
JP53140396A 1995-04-19 1996-04-18 Steam barrier for thermal insulation of buildings Expired - Fee Related JP4471403B2 (en)

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DE19514420A DE19514420C1 (en) 1995-04-19 1995-04-19 Vapor barrier for use in the thermal insulation of buildings
PCT/DE1996/000705 WO1996033321A1 (en) 1995-04-19 1996-04-18 Vapour barrier for use in the heat insulation of buildings

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